write_index: optionally allow broken null sha1s

diff --git a/Documentation/git-name-rev.txt b/Documentation/git-name-rev.txt
index ad1d1468c9936d206701d379003177e7457c884e..11da704b8d36089ad54c35dc27ed013d65fb8cc0 100644 (file)
--- a/Documentation/git-name-rev.txt
+++ b/Documentation/git-name-rev.txt
@@ -31,8 +31,10 @@ OPTIONS
        List all commits reachable from all refs
 
 --stdin::
-       Read from stdin, append "(<rev_name>)" to all sha1's of nameable
-       commits, and pass to stdout
+       Transform stdin by substituting all the 40-character SHA-1
+       hexes (say $hex) with "$hex ($rev_name)".  When used with
+       --name-only, substitute with "$rev_name", omitting $hex
+       altogether.  Intended for the scripter's use.
 
 --name-only::
        Instead of printing both the SHA-1 and the name, print only